Last month, the I-Team investigate a melting furnace part and one man's fight to get a replacement. Now, it's out with the old and in with the new: A free furnace for Bob Christopher in Valparaiso, Ind.

"My furnace has arrived and it is being installed today," he said.

Christopher received the furnace this week, after an I-Team investigation into his old one, which was under warranty.

Christopher said he discovered it burned and charred and not working in December. He says he was forced to use space heaters as he disputed with the company, Carrier.

He says Carrier offered him a replacement part and then $500 towards a new furnace, but he wasn't happy with that, so he called the I-Team.

On the phone, its spokesman said the company was already working with Christopher to address his concerns. Then Carrier offered him a new furnace and installation.

Now, Christopher says he is staying warm and feels safe with a new furnace.

The I-Team found that in 2008, Carrier settled a class action lawsuit over its high-efficiency condensing furnaces like Christopher's. The company did not admit to any wrongdoing but the complaint states the furnaces were manufactured with some inferior materials.